Anteriornectophore with characteristically twisted, serrated ridges. The ventral ridges unite close to the apex. Large, divided and claw-shaped hydroecium. Carrot-shaped somatocyst extending to about half the height of the nectophore. No posteriornectophore is developed. Conical bract with lightly serrated ridges. Large neck shield; shallow hydroecium; thick phyllocyst reaching almost to apex. The gonophore is also characteristically twisted.
Kingdom Animalia Phylum Cnidaria Class Hydrozoa Subclass Siphonophorae Order Calycophorae Family Diphyidae Subfamily Diphyinae Genus Eudoxoides Species Eudoxoides spiralis